کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1626941 1516451 2006 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Grain refining efficiency of Al–Ti–C alloys
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Grain refining efficiency of Al–Ti–C alloys
چکیده انگلیسی

The problems associated with boride agglomeration and the poisoning effect of Zr in Zr-bearing alloys have created a big demand for boron-free grain refiners. The potential benefits of TiC as a direct nucleant for aluminium grains have thus generated a great deal of interest in TiC-bearing alloys in recent years. In Al–Ti–C grain refiners commercially available today, Al3Ti particles are introduced into the melt along with the TiC particles. Since the latter are claimed to nucleate α-Al directly, it is of great technological interest to see if reducing the Ti:C ratio further, i.e., increasing the C content of the grain refiner, will produce an increase in the grain refining efficiency of these alloys. A series of grain refiner samples with the Ti concentration fixed at 3% and a range of C contents between 0 and 0.75 were obtained by appropriately mixing an experimental Al–3Ti–0.75C alloy with Al–10Ti alloy and commercial purity aluminium. The grain refining efficiency of these grain refiners was assessed to investigate the role of the insoluble TiC and the soluble Al3Ti particles. The optimum chemistry for the Al–Ti–C grain refiners was also identified.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 422, Issues 1–2, 28 September 2006, Pages 128–131
نویسندگان
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